The primary reason this volume remains a talking point is its cast. While COAT often obscures real names behind aliases, the models in Number 20 became legends—several of whom either became exclusive COAT stars or transitioned to mainstream Japanese entertainment (in a limited, often uncredited fashion).
The featured "Prince" of this volume is widely known in fan circles as Taiga (a pseudonym). Unlike previous Number leads who were often cast for raw physicality, Taiga was selected for his "bishōnen" (beautiful youth) looks: sharp jawline, soulful eyes, and a lean swimmer’s build. His scenes in WATER PRINCE are notable for their surprising tenderness mixed with the required explicitness. COAT - Number 20 WATER PRINCE
Supporting cast includes:
Important legal and ethical note: As an adult video produced in Japan, this title is intended for viewers aged 18+ and subject to Japanese censorship laws (mosaic pixelation on genitalia). International readers should ensure compliance with local laws. The primary reason this volume remains a talking
For enthusiasts of Japanese gay video (Bara and Boy’s Love live-action genres), the studio COAT Corporation needs no introduction. Since its inception in the early 1990s, COAT has been a cornerstone of the industry, known for its high production values, curated casting of young, athletic "idol-like" talents, and a vast library of themed series. Unlike previous Number leads who were often cast
Among their most legendary sub-series is the "Number" collection. Unlike their more hardcore or fetish-specific lines, the Number series is often treated as a "premium" label—featuring magazine-style photoshoot aesthetics, romantic (or aggressively stylized) narratives, and the launchpad for some of the biggest stars in the genre’s history.
"COAT - Number 20 WATER PRINCE" (often romanized as WATER PRINCE) holds a sacred place in this pantheon. Released in the mid-2000s (2006-2007 era, depending on the pressing), this volume is frequently cited by long-time collectors as a turning point for the series, bridging the "classic" era of COAT with the more polished, performance-driven modern era.